Electrode active material, electrode including the same, and lithium battery including the electrode
a lithium battery and active material technology, applied in the direction of non-aqueous electrolyte accumulator electrodes, cell components, electrical equipment, etc., can solve the problems of limited applicability of graphite as a high-capacity battery material, negative active material not having satisfactory conductivity, capacity, lifetime characteristics,
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preparation example 1
Preparation of a Composite Including CNT and Mesoporous SiO2 (KIT-6)
[0167]30 g of surfactant (Pluronic 123, Aldrich) was dissolved in 1,085 g of water, and 0.183 g of the activated MWNT of Comparative Preparation Example 1 was added thereto, followed by sonication for 12 hours.
[0168]30 g of 1-butanol (99.5 wt %, Samchun) was added to the mixture at room temperature, and 59 g of a hydrochloric acid solution (35 wt %) was further added thereto, and continuously stirred. Next, 66.5 g of TEOS (95 wt %, Aldrich) was added to the mixture, and then stirred again at a temperature of 35° C. for 24 hours.
[0169]A hydrothermal treatment of the mixture was performed at a temperature of 100° C. for 24 hours.
[0170]The reaction mixture was then filtered, washed with ethanol, and filtered again.
[0171]The resultant was heat treated at a temperature of 370° C. for 3 hours to obtain a composite including CNT and mesoporous SiO2 (KIT-6).
[0172]In the composite, the amount of the CNT was 1 parts by weight...
preparation example 2
Preparation of a Composite Including CNT and Mesoporous SiO2 (KIT-6)
[0173]A composite including CNT and mesoporous SiO2 (KIT-6) was prepared in the same manner as in Preparation Example 1, except that 0.563 g of MWNT was used instead of 0.183 g of MWNT.
[0174]In the composite, the amount of the CNT was 3 parts by weight based on 100 parts by weight of the composite including CNT and mesoporous SiO2 (KIT-6).
preparation example 3
Preparation of a Composite Including CNT and Mesoporous SiO2 (KIT-6)
[0175]A composite including CNT and mesoporous SiO2 (KIT-6) was prepared in the same manner as in Preparation Example 1, except that 0.958 g of MWNT was used instead of 0.183 g of MWNT.
[0176]In the composite, the amount of the CNT was 5 parts by weight based on 100 parts by weight of the composite including CNT-mesoporous SiO2 (KIT-6).
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